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You searched for: subject:"process control"
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[texts]A graphically-programmed, microprocessor-based industrial controller (Volume Report (University of Illinois at Urbana-Champaign. Dept. of Computer Science) no. 865) - Weaver, Alfred C
"UILU-ENG 77 1728."
Keywords: Microprocessors; Process control
Downloads: 33
[movies]ST 4U 45: Processes in Smalltalk - James Robertson
A look at processes in Smalltalk. While we are using Pharo, the way processes work is similar in Squeak, Pharo, VisualWorks, and other Smalltalks
Keywords: smalltalk; process; process control
Downloads: 103
[texts]A cross-assembler/simulator for a microprocessor-based industrial controller (Volume Report (University of Illinois at Urbana-Champaign. Dept. of Computer Science) no. 886) - Blanton, Robert Elmore, 1952-
Originally presented as the author's thesis (M.S.--University of Illinois at Urbana-Champaign, 1977)
Keywords: Microprocessors; Process control
Downloads: 54
[texts]Solution approaches to a multi-stage, multi-machine, multi-product production scheduling problem - Loveland, Charles Stafford
Typescript
Keywords: Time study; Process control
Downloads: 241
[texts]Process dynamics and control : G. David Shilling - Shilling, George David
Includes bibliographical references
Keywords: Chemical processes; Chemical process control
Downloads: 55
[texts]Once is enough in radiometric calibrations (Volume 112)
Journal of Research of the National Institute of Standards and Technology
Keywords: process control; calibration; quality measurements
Downloads: 157
[texts]Adaptive optimization of continuous microbial growth processes - Harmon, Jeffrey Lynn
Typescript
Keywords: Anaerobic bacteria; Autoclaves; Biomass; Process control
Downloads: 97
[texts]Standards library for measurement and control : guidelines for quality, safety, & productivity - Instrument Society of America
Includes bibliographical references and index
Keywords: Engineering instruments; Automatic control; Process control
Downloads: 26
[texts]VIPTRAN2 : an improved programming language and its compiler for process control equations (Volume Report (University of Illinois at Urbana-Champaign. Dept. of Computer Science) no. 643) - Weaver, Alfred Charles

Keywords: VIPTRAN (Computer program language); Process control
Downloads: 31
[texts]Process control instrumentation - United States. Office of International Marketing
31
Keywords: Process control equipment industry United States
Downloads: 219
[texts]Illustrated General Catalogue No. 7, Interior Conduit and Insulation Company, New York : Interior and Underground Conduits, and New and Improved Electric Light, Heat and Power Appliances - Interior Conduit and Insulation Co.
Trade catalog, Text, Illus, CCA ID:92-B2552, 1892, 54 p, 30 cm
Keywords: junction boxes; conduits; switches; Division 40; Process Intergration; Process Control Hardware; Process Control Wiring
Downloads: 146
[texts]Fast Track Projects - Max Hitchens
Lemm Corporation builds a new automated plant. This white paper describes the process and how it applies to other fast track factory automation projects
Keywords: Automation Master; Factory Automation; PLC; Process Control; Simulation; Emulation; Diagnostics
Downloads: 13
[texts]VIPTRAN--a programming language and its compiler for Boolean systems or process control equations (Volume Report (University of Illinois at Urbana-Champaign. Dept. of Computer Science) no. 603) - Weaver, Alfred Charles
Thesis (M.A.)--University of Illinois at Urbana-Champaign
Keywords: VIPTRAN (Computer program language); Process control; Switching theory
Downloads: 28
[texts]9. Electronics IJECE Prioritized Fault Reporting Shripad V Deshpande
Wireless Sensor Networks (WSNs) are now established as one of the most cost effective and efficient mechanism for collecting data on the industrial shop floor. The sensors, apart from just collecting data, can also be used to detect faults occurring in the process being monitored by them. Traditionally, such faults are accumulated in the central node and processed collectively at one place. Instead of this, a distributed approach for fault processing is proposed...
Keywords: Wireless Sensor Network; IWSN; Alarm Filtering; Industrial Process Control
Downloads: 11
[texts]Youngstown buckeye conduit - Youngstown Sheet and Tube Company
156 p. ; ill. ; 20 cm. ; trade catalog
Keywords: electrical conduits -- catalogs; Division 26; Division 40; transfer switches; process control wiring; process control conduit; raceway; and supports
Downloads: 55
[texts]Approach to reliability when applying new technologies - Bear, J. C
Tactical weapon systems, while different in many respects from PTTI applications, face similar risks in achieving reliability in development. General principles derived from experience in achieving high reliability in tactical weapon systems are selectively summarized for application to new technologies in unusual environments.
Keywords: FABRICATION; PROCESS CONTROL (INDUSTRY); SEMICONDUCTORS (MATERIALS); SILICON; ECONOMIC ANALYSIS; LOGISTICS; PLANT DESIGN; PRODUCTION ENGINEERING
Downloads: 63
[texts]Electric power scheduling: A distributed problem-solving approach - Mellor, Pamela A.
Space Station Freedom's power system, along with the spacecraft's other subsystems, needs to carefully conserve its resources and yet strive to maximize overall Station productivity. Due to Freedom's distributed design, each subsystem must work cooperatively within the Station community. There is a need for a scheduling tool which will preserve this distributed structure, allow each subsystem the latitude to satisfy its own constraints, and preserve individual value systems while maintaining Sta...
Keywords: AMMONIUM COMPOUNDS; SILICON; SOLUBILITY; AMMONOLYSIS; CERAMICS; EXTRACTION; FABRICATION; HALIDES; NITRIDES; BY-PRODUCTS; PROCESS CONTROL (INDUSTRY)
Downloads: 98
[texts]Geology and geochemistry of sulfide and sulfate deposition - Holser, W. T
Factors contributing to the geology and geochemistry of sulfide and sulfate deposition are discussed. The age curves of sulfur and oxygen isotopes in marine sulfate are assessed.
Keywords: ENCAPSULATING; STATISTICAL ANALYSIS; MANUFACTURING; PHOTOVOLTAIC CELLS; PRODUCTIVITY; FAILURE; MODULES; PROCESS CONTROL (INDUSTRY); QUALITY CONTROL; RELIABILITY
Downloads: 112
[texts]Reconstructing Internal Temperature Distributions from Ultrasonic Time-of-Flight Tomography and Dimensional Resonance Measurements (Volume 89) - Norton, S.J.
Journal of Research of the National Bureau of Standards
Keywords: dimensional resonance; metals processing; process control; temperature distribution sensor; tomography; ultrasound
Downloads: 95
[texts]Explosive Spot Joining of Metals - Perry, Ronnie B
The invention is an apparatus and method for wire splicing using an explosive joining process. The apparatus consists of a prebend, U-shaped strap of metal that slides over prepositioned wires. A standoff means separates the wires from the strap before joining. An adhesive means holds two ribbon explosives in position centered over the U-shaped strap. A detonating means connects to the ribbon explosives...
Keywords: SPACECRAFT LAUNCHING; SPACE SHUTTLES; DELAY; OPTIMIZATION; PROCESS CONTROL (INDUSTRY); HARDWARE; FLIGHT OPTIMIZATION; CONTRACTORS; INSPECTION
Downloads: 81
[texts]Fatigue damage accumulation in various metal matrix composites - Johnson, W. S
The purpose of this paper is to review some of the latest understanding of the fatigue behavior of continuous fiber reinforced metal matrix composites. The emphasis is on the development of an understanding of different fatigue damage mechanisms and why and how they occur. The fatigue failure modes in continuous fiber reinforced metal matrix composites are controlled by the three constituents of the system: fiber, matrix, and fiber/matrix interface...
Keywords: EXTRUDING; MANUFACTURING; MICROCHANNEL PLATES; PROCESS CONTROL (INDUSTRY); FABRICATION; FEASIBILITY ANALYSIS; MACHINE TOOLS; VOIDS
Downloads: 101
[texts]Buckling Design Studies of Inverted, Oblate Bulkheads for a Propellant Tank - Smeltzer, Stanley S., III
An investigation of the deformation and buckling characteristics of a composite, oblate bulkhead that has an inverted geometry and is subjected to pressure-only loading is presented for three bulkhead geometries and thicknesses. The effects of a stiffening support ring at the bulkhead to cylinder interface are also evaluated. Buckling analyses conducted using the axisymmetric shell code BOSOR4 are discussed for several bulkhead configurations...
Keywords: SUPERCOMPUTERS; DISPLAY DEVICES; PIXELS; TRANSPLANTATION; POPULATIONS; GENETIC ALGORITHMS; PROCESS CONTROL (INDUSTRY)
Downloads: 108
[texts]Finite element methods for integrated aerodynamic heating analysis - Peraire, J
Over the past few years finite element based procedures for the solution of high speed viscous compressible flows were developed. The objective of this research is to build upon the finite element concepts which have already been demonstrated and to develop these ideas to produce a method which is applicable to the solution of large scale practical problems. The problems of interest range from three dimensional full vehicle Euler simulations to local analysis of three-dimensional viscous laminar...
Keywords: DOCUMENTS; PROCESS CONTROL (INDUSTRY); PHOTOVOLTAIC CELLS; PHOTOVOLTAIC CONVERSION; QUALITY CONTROL; CONTRACTORS; COST EFFECTIVENESS; CRITERIA; INSTALLING; MANUFACTURING
Downloads: 120
[texts]IMPLEMENTATION OF CONTROL CARDS AND SUPPORTING METHOD IN PRODUCTION ENGINEERING / Zastosowanie kart kontrolnych i metod wspomagających w inżynierii produkcji - Wolnowska Anna, Kopacz Małgorzata
In the article there were presented chosen method associated with statistical control of production processes. Mainly focused on control cards and Pareto-Lorenz analysis. Showed method were implemented to analysis production process stability of hearing aids in X company (the brand name don’t give because date of production is secret). Researches were made few months after new assembly lines starts-up...
Keywords: Pareto-Lorenz analysis; analiza Pareto-Lorenza; inżynieria produkcji; production engineering; statistical process control; statystyczne sterowanie procesem
Downloads: 57
[texts]Closed Brayton Cycle power system with a high temperature pellet bed reactor heat source for NEP applications - Juhasz, Albert J.
Capitalizing on past and future development of high temperature gas reactor (HTGR) technology, a low mass 15 MWe closed gas turbine cycle power system using a pellet bed reactor heating helium working fluid is proposed for Nuclear Electric Propulsion (NEP) applications. Although the design of this directly coupled system architecture, comprising the reactor/power system/space radiator subsystems, is presented in conceptual form, sufficient detail is included to permit an assessment of overall sy...
Keywords: AUTOMATIC CONTROL; COMPUTER PROGRAMS; PROCESS CONTROL (INDUSTRY); ROBOT CONTROL; WELDING; INSTALLING; MINICOMPUTERS; PERSONAL COMPUTERS
Downloads: 159
[texts]A Sample of NASA Langley Unsteady Pressure Experiments for Computational Aerodynamics Code Evaluation - Schuster, David M.
As computational fluid dynamics methods mature, code development is rapidly transitioning from prediction of steady flowfields to unsteady flows. This change in emphasis offers a number of new challenges to the research community, not the least of which is obtaining detailed, accurate unsteady experimental data with which to evaluate new methods. Researchers at NASA Langley Research Center (LaRC) have been actively measuring unsteady pressure distributions for nearly 40 years...
Keywords: BIBLIOGRAPHIES; FAILURE ANALYSIS; FAILURE MODES; RISK; QUALITY CONTROL; RELIABILITY; PROCESS CONTROL (INDUSTRY)
Downloads: 108
[texts]Government financial support for civil aircraft research, technology and development in four European countries and the United States - Chandler, B.
Data on the levels of government financial support for civil aircraft airframe and engine (CAAE) research and technology (R&T) in the United States and Europe (United Kingdom, West Germany, France and The Netherlands) and means of comparing these levels are provided. Data are presented for the years 1974-1977. European R&T expenditure data were obtained through visits to each of the four European countries, to the Washington office of the European Communities, and by a search of applicable liter...
Keywords: CZOCHRALSKI METHOD; INGOTS; PHOTOVOLTAIC CONVERSION; SILICON; SOLAR CELLS; COST REDUCTION; ENERGY TECHNOLOGY; PROCESS CONTROL (INDUSTRY)
Downloads: 100
[texts]Foster practical pyrometers : thermo-couple (stem) type. - Foster Instrument Co.
39 p., [2] folded leaves of plates : ill. ; 24 cm. trade catalog.
Keywords: junction boxes -- catalogs; Division 40; process control junction boxes; analog controllers/recorders
Downloads: 30
[texts]LWC and Temperature Effects on Ice Accretion Formation on Swept Wings at Glaze Ice Conditions - Vargas, Mario
An experiment was conducted to study the effect of liquid water content and temperature on the critical distance in ice accretion formation on swept wings at glaze ice conditions. The critical distance is defined as the distance from the attachment line to tile beginning of the zone where roughness elements develop into glaze ice feathers. A baseline case of 150 mph, 25 F, 0.75 g/cu m. Cloud Liquid Water Content (LWC) and 20 micrometers in Water Droplet Median Volume Diameter (MVD) was chosen...
Keywords: ADVANCED MICROWAVE SOUNDING UNIT; PERFORMANCE TESTS; SPECIFICATIONS; MICROWAVE SENSORS; ACCEPTABILITY; PROCESS CONTROL (INDUSTRY); PROCUREMENT; QUALITY CONTROL
Downloads: 156
[texts]Chemical Process Dynamics and Controls - Student Authors, Peter J. Woolf
With its first edition in 2006, the University of Michigan Chemical Engineering Process Dynamics and Controls course has been developing an Open Textbook. This electronic textbook is a student-contributed open-source text covering the materials used at Michigan in their senior level controls course. This resource is a part of the Open.Michigan collection at: http://open.umich.edu/education/engin/che/che466/fall2008
Keywords: chemical engineering; chemical modeling; chemical process control; process controls; process dynamics
Downloads: 4,009
[texts]Submicrometer linewidth metrology in the optical microscope (Volume 92) - Nyyssonen, D.
Journal of Research of the National Bureau of Standards
Keywords: critical dimension measurement; linewidth; micrometrology; microscopy; optical metrology; process-control metrology
Downloads: 111
[texts]STS-71 Shuttle/Mir mission report - Zimpfer, Douglas J
The performance measurements of the space shuttle on-orbit flight control system from the STS-71 mission is presented in this post-flight analysis report. This system is crucial to the stabilization of large space structures and will be needed during the assembly of the International Space Station A mission overview is presented, including the in-orbit flight tests (pre-docking with Mir) and the systems analysis during the docking and undocking operations...
Keywords: COMPUTER AIDED MANUFACTURING; GEARS; GRINDING MACHINES; NUMERICAL CONTROL; PROCESS CONTROL (INDUSTRY); MAINTENANCE; METAL GRINDING
Downloads: 155
[texts]An analysis of defect densities found during software inspections - Kelly, John C.
Software inspection is a technical evaluation process for finding and removing defects in requirements, design, code, and tests. Detailed data was collected during the first three years of experience at JPL on 203 inspections. Statistics are discussed for this set of inspections. Included, on a per inspection basis, are averages of: staff time expended, pages covered, major defects found, minor defects found, and inspection team size...
Keywords: APPLICATIONS PROGRAMS (COMPUTERS); LABORATORIES; PROCESS CONTROL (INDUSTRY); PRODUCT DEVELOPMENT; SOFTWARE ENGINEERING; AERODYNAMICS; FLIGHT MECHANICS; NASA PROGRAMS
Downloads: 193
[movies]MIT OCW: 2.830J/6.780J/ESD.63J Control of Manufacturing Processes, Spring 2008 - Duane Boning, David Hardt
This course explores statistical modeling and control in manufacturing processes. Topics include the use of experimental design and response surface modeling to understand manufacturing process physics, as well as defect and parametric yield modeling and optimization. Various forms of process control, including statistical process control, run by run and adaptive control, and real-time feedback control, are covered...
Keywords: Process control; manufacturing process; discrete system feedback control theory; empirical and adaptive modeling; off-line optimization; statistical process control; real-time control; 2.830J; 2.830; one-factor-at-a-time; robustness; Shewhart Hypothesis; semiconductor manufacturing
Downloads: 1,551
[movies]MIT2-830JS08 - MIT OpenCourseWare
This course explores statistical modeling and control in manufacturing processes. Topics include the use of experimental design and response surface modeling to understand manufacturing process physics, as well as defect and parametric yield modeling and optimization. Various forms of process control, including statistical process control, run by run and adaptive control, and real-time feedback control, are covered...
Keywords: process control; manufacturing process; discrete system; feedback control theory; empirical; adaptive; modeling; off-line optimization; statistical process control; real-time control; 2.830J; 2.830; robustness; Shewhart Hypothesis; semiconductor manufacturing
Downloads: 13,947
[texts]Impact of shorter wavelengths on optical quality for laws - Wissinger, Alan B.
This study explores parametrically as a function of wavelength the degrading effects of several common optical aberrations (defocus, astigmatism, wavefront tilts, etc.), using the heterodyne mixing efficiency factor as the merit function. A 60 cm diameter aperture beam expander with an expansion ratio of 15:1 and a primary mirror focal ratio of f/2 was designed for the study. An HDOS copyrighted analysis program determined the value of merit function for various optical misalignments...
Keywords: COMPUTERIZED SIMULATION; PROBABILITY THEORY; QUALITY CONTROL; RELIABILITY; STATISTICAL ANALYSIS; NORMAL DENSITY FUNCTIONS; PROBABILITY DISTRIBUTION FUNCTIONS; PROCESS CONTROL (INDUSTRY)
Downloads: 59
[texts]Identification of bearing and seal dynamic stiffness parameters - Bently, D. E.
The results are presented of two simple tests, mainly steady state load test and squeeze film test, for establishing the coefficients of bearings and seals. It also discusses the methodology of the tests and some observed conclusions from the obtained data. Perturbation testing results are given as an example of verification and proof of validity of the two previous tests.
Keywords: ENCAPSULATING; PEROXIDES; REACTIVITY; SERVICE LIFE; MANUFACTURING; PROCESS CONTROL (INDUSTRY); STORAGE STABILITY; YIELD; ACETATES; CURING; ETHYLENE COMPOUNDS; FORMULATIONS
Downloads: 131
[texts]trw :: papers :: Aiken Building Reliability Into Process Control Systems
From the bitsavers.org collection, a scanned-in computer-related document.trw :: papers :: Aiken Building Reliability Into Process Control Systems
Keywords: computer; control; process; failures; output; system; digital; reliability; maintenance; failure; process control; computer control; digital computer; individual components; control system
Downloads: 21
[texts]Effect of sound on boundary layer stability - Saric, William S.
Experiments are conducted in the Arizona State University Unsteady Wind Tunnel with a zero-pressure-gradient flat-plate model that has a 67:1 elliptical leading edge. Boundary-layer measurements are made of the streamwise fluctuating-velocity component in order to identify the amplified T-S waves that are forced by downstream-traveling sound waves. Measurements are taken with circular 3-D roughness elements placed at the Branch 1 neutral stability point for the frequency under consideration, and...
Keywords: BUNDLES; DRYING; RADIANT HEATING; SLURRIES; CARBON FIBERS; COMPOSITE MATERIALS; POWDER (PARTICLES); PREFORMS; PROCESS CONTROL (INDUSTRY); WEAVING; CORRELATION; DEPOSITION
Downloads: 103
[texts]ge :: history :: CPB-296 Business Automation Jul63
From the bitsavers.org collection, a scanned-in computer-related document.ge :: history :: CPB-296 Business Automation Jul63
Keywords: computer; data; manager; erma; general; electric; sales; lasher; ment; programing; control computer; general electric; three years; general manager; data processing; process control; computer department
Downloads: 19
[texts]Condensational growth and trace species scavenging in stratospheric sulfuric acid/water aerosol droplets - Tompson, Robert V., Jr
Stratospheric aerosols play a significant role in the environment. The composition of aerosols is believed to be a liquid solution of sulfuric acid and water with numerous trace species. Of these trace species, ozone in particular was recognized as being very important in its role of shielding the environment from harmful ultraviolet radiation. Also among the trace species are HCl and ClONO2, the so called chlorine reservoir species and various oxides of nitrogen...
Keywords: CARBON FIBERS; MECHANICAL PROPERTIES; MONITORS; MORPHOLOGY; PROCESS CONTROL (INDUSTRY); THICKNESS; COMPACTING; CROSSLINKING; FLOW MEASUREMENT; PARALLEL PLATES; POLYIMIDES; POLYMER MATRIX COMPOSITES; PREPREGS; RESINS
Downloads: 43
[texts]The HI Environment of Nearby Lyman-alpha Absorbers - VanGorkom, J. H.
We present the results of a VLA and WSRT search for H I emission from the vicinity of seven nearby clouds, which were observed in Ly-alpha absorption with HST toward Mrk 335, Mrk 501, and PKS 2155-304. Around the absorbers, we searched a volume of 4O' x 40' x 1000 km/s; for one of the absorbers we probed a velocity range of only 600 km/s. The H I mass sensitivity (5 sigma) very close to the lines of sight varies from 5 x 10(exp 6) solar mass at best to 5 x 10(exp 8) solar mass at worst...
Keywords: PROCESS CONTROL (INDUSTRY); FLEXURAL STRENGTH; SCANNING ELECTRON MICROSCOPY; TOLUENE; CURING; POROUS MATERIALS; MICROSTRUCTURE; MICROPOROSITY; MECHANICAL PROPERTIES; GLYCOLS; PYROLYSIS; FABRICATION; DENSITY MEASUREMENT
Downloads: 80
[texts]Simulated Microgravity Increases Cutaneous Blood Flow in the Head and Leg of Humans - Stout, M. Shannon
The cutaneous micro-circulation vasodilates during acute 6 deg. head-down tilt (HDT, simulated microgravity) relative to upright conditions, more in the lower body than in the upper body. We expected that relative magnitudes of and differences between upper and lower body cutaneous blood flow elevation would be sustained during initial acclimation to simulated microgravity. We measured cutaneous micro-vascular blood flow with laser-Doppler flowmetry at the leg (over the distal tibia) and cheek (...
Keywords: MISSION PLANNING; SPACE SHUTTLES; FLOW CHARTS; VARIABILITY; NASA SPACE PROGRAMS; SPACE SHUTTLE ORBITERS; TIME DEPENDENCE; COSTS; STANDARDS; PROCESS CONTROL (INDUSTRY); TIME MEASUREMENT; MANAGEMENT METHODS; COST EFFECTIVENESS
Downloads: 108
[texts]Analysis of precracking parameters and fracture toughness for ceramic single-edge-precracked-beam specimens - Choi, Sung R.
The single-edge-precracked-beam (SEPB) method involves creation of a straight-through crack from an indentation crack. The straight-through crack is developed by applying a controlled bending load to a specimen via a precracking fixture. The fixture induces the following sequence: (1) stable growth of the indentation crack; (2) pop-in; and finally, (3) arrest-thereby forming a straight-through precrack...
Keywords: CRYOGENIC FLUIDS; SUPERFLUIDITY; TELEMETRY; EXPERT SYSTEMS; KNOWLEDGE BASES (ARTIFICIAL INTELLIGENCE); ORBITAL SERVICING; PROCESS CONTROL (INDUSTRY); SPACE SHUTTLE PAYLOADS; SPACE TECHNOLOGY EXPERIMENTS; ERROR ANALYSIS; HELIUM
Downloads: 95
[texts]mit :: rle pdp1 :: memos :: pdp35 part4 nov71
From the bitsavers.org collection, a scanned-in computer-related document.mit :: rle pdp1 :: memos :: pdp35 part4 nov71
Keywords: process; jmp; program; processes; buffer; frk; ivk; instruction; multiprocessing; lock; process control; enter queue; process hoard; store store; process executing; queue population; live registers; locked region
Downloads: 22
[texts]Requirements analysis notebook for the flight data systems definition in the Real-Time Systems Engineering Laboratory (RSEL) - Wray, Richard B
A hybrid requirements analysis methodology was developed, based on the practices actually used in developing a Space Generic Open Avionics Architecture. During the development of this avionics architecture, a method of analysis able to effectively define the requirements for this space avionics architecture was developed. In this methodology, external interfaces and relationships are defined, a static analysis resulting in a static avionics model was developed, operating concepts for simulating ...
Keywords: CONTROL SYSTEMS DESIGN; CONTROLLERS; DYNAMICAL SYSTEMS; PROTOTYPES; DYNAMIC CONTROL; EXPERT SYSTEMS; FUZZY SETS; KNOWLEDGE BASES (ARTIFICIAL INTELLIGENCE); MANUFACTURING; PROBLEM SOLVING; PROCESS CONTROL (INDUSTRY); REAL TIME OPERATION
Downloads: 91
[texts]Resonance lamp absorption measurement of OH number density and temperature in expansion tube scramjet engine tests - Lempert, Walter R.
In this paper, we report results of hydroxyl radical and static temperature measurements performed in the General Applied Science Laboratories-NASA HYPULSE expansion tube facility using the microwave resonance lamp absorption technique. Data were obtained as part of a series of hydrogen/air and hydrogen/oxygen combustion tests at stagnation enthalpies corresponding to Mach 17 flight speeds. Data from a representative injector configuration is compared to a full Navier-Stokes CFD solution.
Keywords: CULTURE TECHNIQUES; CHEMICAL ANALYSIS; LABORATORIES; MICROORGANISMS; PROCESS CONTROL (INDUSTRY); MICROBIOLOGY; QUALITY CONTROL; SPACE STATION FREEDOM; SPECIFICATIONS; STANDARDIZATION; WASTE WATER; WATER QUALITY; WATER RECLAMATION
Downloads: 69
[texts]Hybrid bearings for LH2 and LO2 turbopumps - Butner, M. F.
Hybrid combinations of hydrostatic and ball bearings can improve bearing performance for liquid hydrogen and liquid oxygen turbopumps. Analytic studies were conducted to optimize hybrid bearing designs for the SSME-type turbopump conditions. A method to empirically determine damping coefficients was devised. Four hybrid bearing configurations were designed, and three were fabricated. Six hybrid and hydrostatic-only bearing configurations will be tested for steady-state and transient performance,...
Keywords: ENGINE PARTS; PLASMA SPRAYING; PROCESS CONTROL (INDUSTRY); ROCKET NOZZLES; TURBINE BLADES; MANUFACTURING; PRODUCTION ENGINEERING; SPACE SHUTTLE MAIN ENGINE; CERAMICS; COATING; COATINGS; LASER WELDING; PLASMA ARC WELDING
Downloads: 108
[texts]Fuel decomposition and boundary-layer combustion processes of hybrid rocket motors - Chiaverini, Martin J.
Using a high-pressure, two-dimensional hybrid motor, an experimental investigation was conducted on fundamental processes involved in hybrid rocket combustion. HTPB (Hydroxyl-terminated Polybutadiene) fuel cross-linked with diisocyanate was burned with GOX under various operating conditions. Large-amplitude pressure oscillations were encountered in earlier test runs. After identifying the source of instability and decoupling the GOX feed-line system and combustion chamber, the pressure oscillati...
Keywords: HEAT RESISTANT ALLOYS; MATHEMATICAL MODELS; TEMPERATURE MEASUREMENT; GENETIC ALGORITHMS; COMPUTER AIDED DESIGN; NEURAL NETS; COMPUTER AIDED MANUFACTURING; OXIDATION RESISTANCE; OPTIMIZATION; COMPUTATION; PROCESS CONTROL (INDUSTRY)
Downloads: 168
[texts]Micro electric propulsion feasibility - Aston, Graeme
Miniature, 50 kg class, strategic satellites intended for extended deployment in space require an on-board propulsion capability to perform needed attitude control adjustments and drag compensation maneuvers. Even on such very small spacecraft, these orbit maintenance functions can be significant and result in a substantial propellant mass requirement. Development of advanced propulsion technology could reduce this propellant mass significantly, and thereby maximize the payload capability of the...
Keywords: CASTINGS; DIMENSIONAL MEASUREMENT; NONDESTRUCTIVE TESTS; X RAY ANALYSIS; INVESTMENT CASTING; PROCESS CONTROL (INDUSTRY); SOLIDIFICATION; TEMPERATURE CONTROL; TEMPERATURE GRADIENTS; CHEMICAL ANALYSIS; CHEMICAL MACHINING; DESTRUCTIVE TESTS
Downloads: 115
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